package ooday01;

public class StudentTest1 {
    public static void main(String[] args) {
        Student ly = new Student();
        Student zwx = new Student("赵薇星",22);
        Student hys = new Student("黄煜燊",25,"jsd2302","001");
        ly.sayHi();
        zwx.sayHi();
        hys.sayHi();
    }
}
